Plastic carrier bag

Abstract

The present invention relates to a plastic carrier bag (1) in which the inner layers (28, 32) as well as the outer layers (30, 34) of the front and back walls (6, 8) are each formed in one piece and merge into one another by folding, in particular forming a bottom fold, wherein the extent of the front and back walls (6, 8) between the respective first and second side edges (10, 12, 10', 12') tapers in the region (114) of the lower third towards and in particular up to the transition (16) (also called "tapering / bottom area"), wherein the lateral extent of the first and second side walls (102, 104) in the tapering / bottom area (114) corresponds to the area in which the extent of the front and back walls (6, 8) tapers, in each case in a corresponding manner. decreases, with the first and second side wall (102,104) in the tapered / bottom area (114) in the area of ​​their first side edges (116) are welded to the front wall (6) and in the area of ​​the second side edges (118) to the rear wall (8).

Description

[0001] The present invention relates to a plastic carrier bag, in particular one that is reusable and recyclable.

[0002] Plastic carrier bags are generally advantageous from an ecological and economic perspective over paper carrier bags if they are frequently reusable and easily recyclable. Reusable plastic carrier bags must meet specific stability criteria, especially since they are often larger and have carrying loops on the front and back. Conventional loop bags are described, for example, in DE 10116 920 A1, WO 01 / 51372 A1, and DE 40 12 897 A1. These prior art loop bags often lack sufficient mechanical stability for the repeated carrying of heavy loads.

[0003] In some cases, it has proven difficult to meet, in particular, the increasing demand for larger-sized reusable plastic carrier bags by means of essentially automated mass production processes and, in addition, to meet the very high quality requirements of commercial users of loop-type carrier bags, such as department stores and hypermarket chains.

[0004] The present invention was therefore based on the object of providing plastic carrier bags, in particular large-sized reusable plastic carrier bags, which are not afflicted with the disadvantages of the carrier bags of the prior art and which are particularly suitable for the repeated, reliable transport of even heavy loads and which can also be manufactured in a simple and cost-effective manner in machine series production.

[0005] Accordingly, a plastic carrier bag was found with a bottom end and an opposite opening end, comprising a front wall and a rear wall, each with a first side edge and an opposite second side edge and an opening edge, as well as a first and an opposite second side wall, each with a first and an opposite second side edge, as well as at least one holding loop connected to the front wall and / or, in particular, at least one holding loop connected to the rear wall, each with a first and a second connection region, wherein the front and rear walls are designed as single- or multi-layered, in particular double-layered, comprising at least one inner layer, in particular an inner layer, and an outer layer, wherein the front and rear walls have a reinforcement region in the region of the opening end, in particular extending to the opening end or encompassing it,containing at least one single- or multi-layer, in particular double-layer, plastic film strip fastened to the front wall on the inside or outside, in particular on the inside, and at least one single- or multi-layer, in particular double-layer, plastic film strip fastened to the rear wall on the inside or outside, in particular on the inside, and each extending from or at a distance from the first side edge in the direction of or to the second side edge. The plastic carrier bag according to the invention described above is characterized in that the at least one inner layer, in particular the inner layer, of the front wall and the at least one inner layer, in particular the inner layer, of the rear wall are formed in one piece, that the outer layers of the front and rear walls are formed in one piece, and that the front wall and the rear wall merge into one another at the bottom end by folding over, in particular forming a bottom fold at this transition, wherein the transition, in particular the bottom fold,extends laterally from a first to an opposite second end, wherein, when the front and rear walls are adjacent to one another up to the transition, in particular the bottom fold (also called a "stackable storage state"), the lateral extent of the transition, in particular the bottom fold, between the first and second ends is less than the lateral extent of the front and rear walls between the respective first and second side edges at the opening end, wherein the extent of the front and rear walls between the respective first and second side edges tapers in the region of the lower third, in particular the lower quarter, relative to the extension between the opening end and the bottom end, in the direction of and in particular up to the transition, in particular to the bottom fold (also called the "tapering / bottom area area"),wherein the lateral / lateral extension of the first and second side walls in the tapered / bottom area decreases, in particular in a corresponding manner, corresponding to the area in which the extension of the front and rear walls tapers between the respective first and second side edges, wherein the first side wall in the tapered / bottom area is welded to the front wall in the area of ​​its first side edge, in particular along its first side edge, and to the rear wall in the area of ​​the second side edge, in particular along its first side edge, and wherein the second side wall in the tapered / bottom area is welded to the front wall in the area of ​​its first side edge, in particular along its second side edge, and to the rear wall in the area of ​​the second side edge, in particular along its second side edge.

[0006] Lateral dimension, as used herein, generally refers to the width of the side walls as well as the width of the front and back walls—in other words, the distance between the opposite side edges of the side, front, and back walls. The longitudinal dimension of the plastic carrier bag according to the invention accordingly extends perpendicularly to this between the opening end and the fold or bottom fold.

[0007] The statements regarding the plastic carrier bag according to the invention are based, unless expressly stated otherwise, on a state in which the front and rear walls lie flat against one another on a level surface. In this state, the plastic carrier bags according to the invention can be stacked on top of one another in a flat state. This state can also be referred to as a "stackable storage state". In the plastic carrier bags according to the invention, the bottom fold in the stackable storage state is particularly preferably an outward-facing bottom fold. By moving the front and rear walls apart, the tapered / bottom surface areas of the front and rear walls become part of the bottom surface, whereby the plastic carrier bag according to the invention transitions into an upright filled state. Due to the fact that these tapered / bottom surface areas of the front and rear walls lie in the plane of the front and rear walls in the stackable storage state.rear wall and are part of these and that these tapered / floor surface areas become part of the floor surface when filled in the erected state, they should be referred to as tapered / floor surface areas in the sense of the invention.

[0008] With the plastic carrier bag according to the invention described above, plastic carrier bags with a large capacity become accessible using large-scale industrial production technology. This is achieved by providing side walls whose sections, tapering towards the bottom end, become part of a base surface, in particular a substantially rectangular or square one, during the filling process. Surprisingly, this particularly substantially rectangular or square base surface can be maintained even in the empty state by simply reaching into the bag interior and pulling the front and back walls apart. In this filled state, the plastic carrier bag according to the invention is advantageously free-standing with an open opening cross-section, so that it can be filled with both hands.In a preferred embodiment, these advantageous properties are achieved in particular by the fact that the first and second side walls each have a side fold, particularly one facing inward. These side folds preferably extend to the transition, particularly preferably to the bottom fold, and preferably begin at the opening end of the plastic carrier bag.

[0009] An embodiment has proven particularly advantageous in which the first and second side edges of the first side wall approach each other, in particular continuously, in the tapered / base surface area and converge in particular in the region of the transition, preferably the base fold, and in which the first and second side edges of the second side wall approach each other, in particular continuously, in the tapered / base surface area and converge in particular in the region of the transition, preferably the base fold. The first and second side walls preferably have a triangular basic shape in the tapered / base surface area. In other words, the opposite side edges of the first and second side walls converge towards each other in the tapered / base surface area and meet at the base end or at the transition from the front to the rear wall, in particular they open into the base fold.In the area of ​​the opposing side edges of the first and second side walls, these are welded to the front and rear walls in the tapered / bottom area, preferably to the inside of the front and rear walls, particularly in the area of ​​the respective side edges of the front and rear walls. In addition to the triangular design of the first and second side walls in the tapered / bottom area, this area can also be semicircular, rectangular, or square, for example, with the triangular design being preferred.

[0010] In this case, it can be provided, in particular, that the front wall tapers in a straight line from the beginning of the tapered / bottom surface area on the first side edge, facing the opening end, to the first end of the transition, in particular the bottom fold. Alternatively, and in particular additionally, it can be provided that the front wall tapers in a straight line from the beginning of the tapered / bottom surface area on the second side edge, facing the opening end, to the second end of the transition, in particular the bottom fold.In a corresponding manner, the rear wall can taper in a straight line from the beginning of the tapered / bottom surface area on the first side edge facing the opening end to the first end of the transition, in particular the bottom fold, wherein alternatively and in particular additionally it can be provided that the rear wall tapers in a straight line from the beginning of the tapered / bottom surface area on the second side edge facing the opening end to the second end of the transition, in particular the bottom fold.

[0011] The first and second side panels are each conveniently based on separate material cuts. These material cuts can be individually adapted to the size and shape of the front and back panels or to the design of the bag's base body, which consists of the front and back panels.

[0012] Very practical embodiments of the plastic carrier bags according to the invention also provide, in particular, that the extension from the first to the second side edge of the first side wall substantially corresponds, in particular corresponds, to the sum of the extension of the tapered / bottom surface area of ​​the front wall, calculated from the transition, in particular the bottom fold, and the extension of the tapered / bottom surface area of ​​the rear wall, calculated from the transition, in particular the bottom fold. Alternatively, and in particular additionally, it can be provided that the extension from the first to the second side edge of the second side wall substantially corresponds, in particular corresponds, to the sum of the extension of the tapered / bottom surface area of ​​the front wall, calculated from the transition, in particular the bottom fold, and the extension of the tapered / bottom surface area of ​​the rear wall, calculated from the transition, in particular the bottom fold.

[0013] In the case of a triangular design of the first and second side walls in the tapered / bottom area, and in particular in the case of a rectangular or square design of the remaining section of the first or second side wall, it can be provided in one of several expedient designs of the plastic carrier bag according to the invention that the width B of the first and / or the second side wall is determined according to the following formula B = 2 × sin α − 90 × R , where α: angle formed by the legs of the first side edge of the front and rear walls at the transition into the tapered / base area, and / or, in particular and, angle formed by the legs of the second side edge of the front and rear walls at the transition into the tapered / base area, R: length of the leg of the first side edge of the front and rear walls from the start of the tapered / base area to the first end of the transition and / or, in particular and, length of the leg of the second side edge of the front and rear walls from the start of the tapered / base area to the second end of the transition and B: width B of the first and / or, in particular and, of the second side wall in the section that does not correspond to the tapered / base area.

[0014] In a very expedient embodiment of the plastic carrier bag according to the invention, it can be provided that the front wall tapers in a straight line from the beginning of the tapered / bottom area on the first side edge facing the opening end to the first end of the transition, in particular the bottom fold, and / or, in particular and, that the front wall tapers in a straight line from the beginning of the tapered / bottom area on the second side edge facing the opening end to the second end of the transition, in particular the bottom fold, and that the rear wall tapers in a straight line from the beginning of the tapered / bottom area on the first side edge facing the opening end to the first end of the transition, in particular the bottom fold, and / or, in particular and, that the rear wall tapers in a straight line from the beginning of the tapered / bottom area on the second side edge facing the opening end to the second end of the transition,especially the base fold, straight-line tapered.,

[0015] In yet another, likewise very expedient embodiment of the plastic carrier bag according to the invention, it can be provided that the front wall tapers in a concave shape from the beginning of the tapered / bottom surface area on the first side edge facing the opening end to the first end of the transition, in particular the bottom fold, and / or, in particular and, that the front wall tapers in a concave shape from the beginning of the tapered / bottom surface area on the second side edge facing the opening end to the second end of the transition, in particular the bottom fold, and that the rear wall tapers in a concave shape from the beginning of the tapered / bottom surface area on the first side edge facing the opening end to the first end of the transition, in particular the bottom fold, and / or, in particular and, that the rear wall tapers in a concave shape from the beginning of the tapered / bottom surface area on the second side edge facing the opening end to the second end of the transition,in particular the bottom fold, tapers in a concave shape. As an alternative to the concave taper described above, a convex taper can also be provided. Accordingly, in such an embodiment, it can be provided that the front wall tapers convexly from the beginning of the taper / bottom surface area on the first side edge facing the opening end to the first end of the transition, in particular the bottom fold, and / or, in particular and, that the front wall tapers convexly from the beginning of the taper / bottom surface area on the second side edge facing the opening end to the second end of the transition, in particular the bottom fold, and that the rear wall tapers convexly from the beginning of the taper / bottom surface area on the first side edge facing the opening end to the first end of the transition, in particular the bottom fold, and / or, in particular and,that the rear wall tapers convexly from the beginning of the tapered / bottom area on the second side edge facing the opening end to the second end of the transition, in particular the bottom fold.

[0016] In a further alternative embodiment, it can be provided that the front wall tapers at the beginning of the tapered / bottom surface area on the first side edge facing the opening end in the direction of the opposite second side edge in a first section and in the section adjoining up to the first end of the transition, in particular the bottom fold, tapers less sharply or no longer and / or, in particular and, that the front wall tapers at the beginning of the tapered / bottom surface area on the second side edge facing the opening end in the direction of the opposite first side edge in a first section and in the section adjoining up to the second end of the transition, in particular the bottom fold,adjoining section tapers less sharply or no longer and that the rear wall tapers at the beginning of the tapered / bottom surface area on the first side edge facing the opening end in the direction of the opposite second side edge in a first section and in the adjoining section up to the first end of the transition, in particular the bottom fold, tapers less sharply or no longer and / or, in particular and, that the rear wall tapers at the beginning of the tapered / bottom surface area on the second side edge facing the opening end in the direction of the opposite first side edge in a first section and in the adjoining section up to the second end of the transition, in particular the bottom fold,The adjoining section is tapered less sharply or no longer at all. In the latter embodiment, in a variant, the tapered / base area can be initiated by changing the shape of the first and second side edges of the front and rear walls by 90° each with respect to the shape of these side edges beyond the tapered / base area, with this shape subsequently changing again by 90° in the direction of the transition from the front to the rear wall. In this section, the width of the tapered / base area remains constant.

[0017] A particularly high degree of mechanical stability is also achieved by the fact that adjacent to or in the region of the first end of the transition, in particular the bottom fold, the first side wall, the multi-layer front wall and the multi-layer rear wall are welded to one another and / or, in particular and, that adjacent to or in the region of the second end of the transition, in particular the bottom fold, the second side wall, the multi-layer front wall and the multi-layer rear wall are welded to one another. In one embodiment which achieves the object underlying the invention particularly satisfactorily, it is provided that adjacent to or in the region of the first end of the transition, in particular the bottom fold, the first side wall, the front wall and the rear wall are welded to one another in a first area.Alternatively, and in particular additionally, it can be provided that adjacent to or in the region of the second end of the transition, in particular the bottom fold, the second side wall, the front wall and the rear wall are welded together in a second area. Preferably, in the first area and / or, in particular and, in the second area, there is a five-, six-, seven- or eight-layer weld, particularly preferably a six- or eight-layer weld. The six-layer welded first or second area comes about because the double-layer front wall, the double-layer rear wall and the mutually adjacent areas of the first and second side walls, in particular those already welded to the double-layer front wall or the double-layer rear wall, lie against one another during the welding process. If a double-layer side wall is used in this procedure, the eight-layer welded areas are obtained.The previously specified embodiments regularly result in a particularly stable floor surface in the erected filled state and, in particular, in a plastic carrier bag that can withstand high mechanical loads and is often reusable.

[0018] Surprisingly, it has been found that the plastic carrier bags according to the invention have pronounced mechanical stability and stability even when the first and second side walls, unlike the front and back walls, are designed as a single layer. It is of course also possible to design the first and second side walls as multiple layers, in particular as double layers. This can further increase stability. However, even with single-layer first and second side walls, a further increase in stability and in particular increased stability is often achieved by having a seam at the opening end. This seam can, for example, be designed and maintained in the same way as the reinforcing areas of the front and back walls, i.e. with the aid of a continuation section adjoining the side wall which is folded over.For many applications, it has proven sufficient for this extension section to be simply folded over to the inside or outside, especially the inside, i.e., forming only one layer. The seam can also be formed by a separate plastic strip. The extension section and the plastic strip are preferably joined by welding to the inside or outside of the first and second side walls.

[0019] Such plastic carrier bags according to the invention solve the problem underlying the invention particularly reliably, in which the holding loop connected to the front wall and the holding loop connected to the rear wall is welded in its first and second connection areas to the single-layer or multi-layer, in particular multi-layer, plastic film strip of the reinforcement area and also to the at least one inner layer, in particular the inner layer, and the outer layer, and wherein the single-layer or multi-layer, in particular multi-layer, plastic film strip of the reinforcement area of ​​the front wall is fastened to the inner or outer layer from or at a distance from the first side edge in the direction of or up to the second side edge by means of welding, and wherein the single-layer or multi-layer, in particular multi-layer,Plastic film strip of the reinforcement area of ​​the rear wall is fastened to the inner or outer layer from or at a distance from the first side edge in the direction of or up to the second side edge by means of welding, wherein the first and second connection areas of the holding loop connected to the front wall and the first and second connection areas of the holding loop connected to the rear wall are present on the inside of the front or rear wall in the area of ​​the single- or multi-layer, in particular multi-layer, plastic film strip of the reinforcement area, wherein a continuation section adjoins the outer layer in each case, wherein the continuation section forms the plastic film strip of the reinforcement area, wherein the continuation section extends at least in sections along the inside of the at least one inner layer, in particular the inner layer, and rests against it,wherein this continuation section present on the inside of the at least one inner layer, in particular the inner layer, is designed to be at least partially double-layered by means of folding over, wherein this continuation section is welded along an extension from or at a distance from the first side edge in the direction of or up to the second side edge to the inside of the at least one inner layer, in particular the inner layer, in particular with a continuous longitudinal weld, and wherein the outer layer of the front and rear walls, in particular in the transition to the continuation section, comprises or forms the opening edge, and wherein the at least one inner layer, in particular the inner layer, extends with its upper edge up to the opening edge or at a distance therefrom,wherein the outer layer and the continuation section of the front wall and the outer layer and the continuation section of the rear wall are each formed in one piece, and wherein the single- or multi-layer, in particular double-layer, plastic film strip of the reinforcement region of the front and rear walls is welded over all of its layers to the inside of the at least one inner layer, in particular the inner layer, along the extension from or at a distance from the first side edge in the direction of or up to the second side edge, in particular with a continuous longitudinal weld, to form a first connecting region, in particular a connecting strip, wherein this first connecting region, in particular a connecting strip, is in each case closer to the lower edge of the reinforcement region than to its upper edge, in particular at or adjacent to the lower edge of the reinforcement region,wherein the outer layer of the front and rear walls is each welded to the outer side of the at least one inner layer, in particular the inner layer, along the extension from or at a distance from the first side edge in the direction of or up to the second side edge, in particular with a continuous longitudinal weld, to form a second connecting region, in particular a second connecting strip, wherein this second connecting region, in particular a second connecting strip, is each spaced closer to the lower edge of the reinforcement region than to its upper edge, in particular at or adjacent to the lower edge of the reinforcement region, wherein the first and second connection regions of the retaining loops connected to the front wall and / or to the rear wall, obtained by welding, are spaced from the first and second connecting regions, in particular the first and second connecting strips,in particular have no overlap with the first and second connecting regions, wherein the retaining loop connected to the front wall and / or the rear wall on the inside is welded in its first and second connection regions, directly or indirectly, to the single- or multi-layer, in particular multi-layer, plastic film strip of the reinforcement region and to the at least one inner layer, in particular the inner layer, and the outer layer.

[0020] With the above-described embodiment of a plastic carrier bag according to the invention, a particularly pronounced reinforcement is achieved, particularly in the upper

[0021] A reinforced edge area has been made available that can withstand heavy mechanical stress and provides a very effective base for attaching straps. The plastic carrying bag, equipped with this reinforced area, is also easy and convenient to open.

[0022] Particularly suitable plastic carrier bags according to the invention are also characterized in that in the section which is not the tapered / bottom area, the first side wall is welded in the region of its first side edge to the front wall, in particular along its first side edge, and in the region of the second side edge to the rear wall, in particular along its first side edge, wherein in the section which is not the tapered / bottom area, the second side wall is welded in the region of its first side edge to the front wall, in particular along its second side edge, and in the region of the second side edge to the rear wall, in particular along its second side edge.

[0023] The plastic carrier bags according to the invention are preferably made of thermoplastics, with polyolefinic thermoplastics, especially polyethylene, being preferred. In these cases, the welded connection is usually a thermoplastic weld. Accordingly, the plastic carrier bags according to the invention are particularly preferably made entirely of thermoplastics, especially polyolefinic thermoplastics such as polyethylene. This results in single-material plastic bags that are particularly sustainably recyclable.

[0024] The outer layer of the front and back walls of the plastic carrier bag according to the invention usually represents a single layer. If there is another layer on the inside and adjacent to the outer layer, this is to be counted as an inside layer or represents the inner layer. If the continuation section is integral with the outer layer, this continuation section must also necessarily be a single layer. The single layer nature of the outer layer of the front and back walls does not preclude the outer layer from being multi-layered and, for example, from being present as a coextruded film. A single-layer outer layer can also have a laminated layer on the inside and / or outside without losing the character of the single layer. In multi-layer systems, the layers are accordingly closely bonded. The outer layer and the inner layer orAccordingly, in a preferred embodiment, the majority of the inner layers are connected to one another only by welding along their side edges. Alternatively, it can also be provided that the outer layer and the inner layer, or the majority of the inner layers, are partially connected to one another, e.g., via isolated welding or adhesive points, in particular welding points.In a preferred embodiment of the plastic carrier bag specified above, it can be provided that the holding loop connected to the front wall via its first and second connection areas and the holding loop connected to the rear wall via its first and second connection areas in the area from the respective first to the second connection area at least in sections has a first flexible, in particular tubular, hollow body and / or a single- or multi-layer material strip, in particular a plastic material strip, which does not form a hollow body and which is at least in sections, in particular substantially completely, enveloped by a second flexible, in particular tubular, hollow body.

[0025] With regard to the holding loops of the plastic carrier bags according to the invention, preference is given to those in which the first flexible, in particular tubular, hollow body is formed from a first flexible plastic material strip with opposite first and second longitudinal side edges, the opposite first and second longitudinal side edges of which are welded and / or glued to one another in an overlapping region and / or, preferably and, in which the second flexible, in particular tubular, hollow body is formed from a second flexible plastic material strip with opposite first and second longitudinal side edges, the opposite first and second longitudinal side edges of which are welded and / or glued to one another in a second overlapping region.

[0026] In a preferred embodiment, the first and second flexible plastic material strips, for example in the form of polyolefin film strips, in particular polyethylene film strips, can have a rectangular shape when spread out flat. The longitudinal edges of these material strips can then be moved toward each other to form the first and second hollow bodies, respectively, in particular tubular ones, and connected to each other in the overlapping area. In this case, the first longitudinal side edge can come into contact with the second longitudinal side edge both above and below the latter in an overlapping area.

[0027] A particularly high degree of strength is achieved in particular by the fact that the first plastic material strip of the first flexible, in particular tubular, hollow body and the second plastic material strip of the second flexible, in particular tubular, hollow body are welded and / or glued to one another at least in sections, in particular along the first and second overlapping regions. It has often proven expedient to weld the first and second plastic material strips in the first and / or second overlapping regions in a single process step, i.e., essentially simultaneously. This creates a uniform weld seam extending along the tubular retaining loop.This embodiment has the further advantage that the first and second flexible hollow bodies are connected to one another in the region of this uniform weld seam, resulting in further increased mechanical strength. Alternatively, the first and second hollow bodies, in particular tubular ones, can also be connected to one another in regions or continuously along their entire length, in particular along a connecting strip, without the first and second overlapping regions themselves overlapping in this connection region.

[0028] In an alternative embodiment, with regard to the connection of the first and second flexible hollow bodies, it can be provided that the first flexible, in particular tubular, hollow body is formed from a first flexible plastic material strip with opposite first and second longitudinal side edges and that the second flexible, in particular tubular, hollow body is formed from a second flexible plastic material strip with opposite first and second longitudinal side edges,wherein, in the overlapping region of the first and second longitudinal side edges of the first flexible plastic material strip, the first longitudinal side edge of the first plastic material strip is welded and / or glued to the first longitudinal side edge of the second material strip, and this first longitudinal side edge of the second plastic material strip is welded and / or glued to the second longitudinal side edge of the first plastic material strip, and wherein, in the overlapping region of the first and second longitudinal side edges of the second flexible plastic material strip, the second longitudinal side edge of the first plastic material strip is welded and / or glued to the second longitudinal side edge of the second material strip, and this second longitudinal side edge of the first plastic material strip is welded and / or glued to the first longitudinal side edge of the second plastic material strip.

[0029] For many applications, it has proven expedient to use plastic carrier bags in which the first holding loop containing the first and second flexible, in particular tubular, hollow bodies and / or the second holding loop containing the first and second flexible, in particular tubular, hollow bodies are pressed flat to form two opposite longitudinal folding edges, wherein preferably the overlapping regions of the opposite first and second longitudinal side edges of the first and second flexible plastic material strips of the first and second flexible hollow bodies of the first and / or second holding loop are located between the opposite longitudinal folding edges and in particular on the same side.Alternatively, it can also be provided that the first retaining loop containing the single-layer or multi-layer material strip not forming a hollow body and the second flexible, in particular tubular, hollow body and / or the second retaining loop containing the single-layer or multi-layer material strip not forming a hollow body and the second flexible, in particular tubular, hollow body are pressed flat to form two opposite longitudinal fold edges, wherein the overlap region of the opposite first and second longitudinal side edges of the second flexible plastic material strip of the second flexible hollow body of the first and / or second retaining loop is preferably located between the opposite longitudinal fold edges. With the aid of the preceding embodiments, the precursor for the retaining loop can be temporarily stored wound on a roll in a flat-pressed state and separated from this roll as needed.The flat, pressed strap also provides a comfortable wearing experience and allows for an even distribution of the carrying forces.

[0030] A further advantageous refinement, in particular of the preceding embodiment, provides that in the first and / or second connection area of ​​the first and / or second retaining loop, in particular the flat-pressed first and / or second retaining loop, the connection side is that side of the retaining loop, in particular the flat-pressed first and second, which does not have the overlapping areas of the opposite first and second longitudinal side edges of the first and second flexible plastic material strips of the first and second flexible hollow bodies. It has surprisingly been shown that particularly good mechanical stability and tear resistance are achieved in this way.

[0031] With the holding loops for the plastic carrier bags according to the invention, embodiments can also be realized in which the second flexible, in particular tubular, hollow body of the holding loop of the front and / or rear wall, in particular the second flexible plastic material strip forming or containing the second flexible, in particular tubular, hollow body of the holding loop of the front and / or rear wall, is based on a plastic material that is at least partially transparent, in particular polyethylene, which is printable or printed on at least some of the inside, in particular by means of a counter-printing process. Since, in the described embodiment, the print is present on the inside of the second hollow body of the holding loop, it is not impaired during wear, for example by abrasion.This is also achieved with an embodiment in which the first flexible, in particular tubular, hollow body or the single- or multi-layer material strip, in particular plastic material strip, of the holding loop of the front and / or rear wall, which does not form a hollow body, is at least partially printable or printed on the outside, and in that the second flexible, in particular tubular, hollow body of the holding loop is based on or consists of a plastic material, in particular polyethylene, which is at least partially transparent. The preceding embodiments of the plastic carrier bag according to the invention also allow the holding loop(s) to be used as information or advertising material carriers or for the attachment of design elements.

[0032] Furthermore, within the meaning of the invention, it can be provided that the outer layer of the front and / or rear wall is based on or consists of a plastic material, in particular polyethylene, which is at least partially transparent and which is printable or printed on the inside, at least partially, in particular by means of a counterprinting process. Furthermore, the plastic carrier bag according to the invention alternatively or additionally comprises at least one inner layer, in particular the inner layer, of the front and / or rear wall, which is at least partially printable or printed on the outside, and wherein the outer layer is based on or consists of a plastic material, in particular polyethylene, which is at least partially transparent.

[0033] A particularly high degree of stability and tear resistance is also achieved by using a non-foamed plastic film, preferably a non-foamed polyolefin film, particularly preferably a non-foamed polyethylene film, and especially a non-foamed low-density polyethylene film, for an outer layer of a plastic carrier bag according to the invention in the aforementioned embodiments. The combination of a foamed plastic inner layer and a non-foamed plastic outer layer surprisingly leads to particularly mechanically resilient and permanently stable plastic carrier bags.The same applies to those preferred embodiments of the holding loop in which the second flexible, in particular tubular, hollow body, in particular the second flexible plastic material strip, is based on or formed from a non-foamed plastic film, preferably a non-foamed polyolefin film, particularly preferably a non-foamed polyethylene film and in particular a non-foamed LD polyethylene film.

[0034] Accordingly, in a very expedient embodiment, it can be provided that the outer layer, the single- or multi-layer, in particular double-layer, plastic film strip of the reinforcement area, in particular the continuation section of the inner or outer layer, and the at least one inner layer, in particular the inner layer, of the front and rear walls, the first and the second side walls and optionally the holding loops connected to the front wall and the rear wall, in particular their first and / or second flexible plastic material strips or their single- or multi-layer material strips not forming a hollow body, are formed or consist of polyethylene, in particular LD polyethylene, wherein the at least one inner layer, in particular the inner layer, of the front and rear walls represents a foamed polyethylene film, in particular a foamed LD polyethylene film, and wherein the outer layer of the front and / or rear walls,and optionally the single- or multi-layer, in particular multi-layer, plastic film strip of the reinforcement area is a non-foamed polyethylene film, in particular a non-foamed low density polyethylene film. In this context, plastic carrier bags are particularly preferred in which the first flexible, in particular tubular, hollow body or the single- or multi-layer material strip of the holding loop of the front and / or rear wall, which does not form a hollow body, in particular the first flexible plastic material strip, is formed or consists of foamed polymer material, preferably foamed polyethylene, and particularly preferably foamed low density polyethylene, and wherein preferably the second flexible, in particular tubular, hollow body of the holding loop of the front and / or rear wall, in particular the second flexible plastic material strip, is made of non-foamed polymer material, preferably non-foamed polyethylene,and particularly preferably non-foamed LD polyethylene,

[0035] For the purposes of the present invention, the outer layer, the single- or multi-layer, in particular double-layer, plastic film strip of the reinforcement area, in particular the continuation section of the inner or outer layer, and / or the at least one inner layer, in particular the inner layer, of the front and / or rear wall are expediently in film form.

[0036] A particularly high degree of stability and tear resistance is also achieved in the above-mentioned embodiments of a plastic carrier bag according to the invention in that the first and second connection areas of the holding loops connected to the front wall and / or to the rear wall, which are obtained in particular by welding, are spaced apart from the first and / or second connecting strips, in particular do not have an overlap with the first and / or second connecting strips.

[0037] In the plastic carrier bag according to the invention, it is preferably provided that the outer layer, the single- or multi-layer, in particular double-layer, plastic film strip of the reinforcement area, in particular the continuation section of the inner and / or outer layer, and the at least one inner layer, in particular the inner layer, of the front and / or rear wall and optionally the holding loops connected to the front and / or rear wall, in particular their first and / or second flexible plastic material strips and / or the single- or multi-layer material strips not forming a hollow body, are formed or consist of polyolefins, in particular polyethylene. As an alternative to polyethylene, polypropylene can also be used. Copolymers with ethylene or propylene as the main component are also suitable, with propylene or propylene, for example, being used for the further comonomers.Ethylene and / or butene, for example 1-butene, or butadiene can be used.

[0038] It is particularly preferably provided that the outer layer, the single-layer or multi-layer, in particular double-layer, plastic film strip of the reinforcement area, in particular the continuation section of the outer layer, and the at least one inner layer, in particular the inner layer, of the front and rear walls as well as the holding loops connected to the front wall and to the rear wall, in particular their first and / or second flexible plastic material strips and / or the single-layer or multi-layer material strips not forming a hollow body, as well as the first and second side walls are formed or consist of polyolefins, preferably polyethylene, particularly preferably HD or LD polyethylene, in particular LD polyethylene.

[0039] Preferably, a uniform plastic material, such as polypropylene or polyethylene, preferably polyethylene, and particularly preferably low-density polyethylene, is used for all components of the plastic carrier bag according to the invention, for example, for the inner and outer layers of the front and rear walls, for the holding loops of the front and rear walls, and for the first and second side walls. This results in a single-material plastic carrier bag that can be easily recycled.

[0040] Furthermore, among the plastic carrier bags according to the invention, those are particularly suitable in which the at least one inner layer, in particular the inner layer, of the front and / or, in particular, rear wall comprises or represents a foamed plastic film, preferably a foamed polyolefin film, particularly preferably a foamed polyethylene film and in particular a foamed low-density polyethylene film. This can reinforce a textile-like appearance when handling the plastic carrier bag according to the invention, for example when folding it. Similarly, the first flexible, in particular tubular, hollow body or the single- or multi-layer material strip not forming a hollow body can also comprise or consist of a foamed plastic film, preferably a foamed polyolefin film, particularly preferably a foamed polyethylene film and in particular a foamed low-density polyethylene film.

[0041] LD polyethylene is particularly preferred among polyethylenes.

[0042] In a preferred embodiment of the plastic carrier bag according to the invention, it can be provided that the holding loop connected to the front wall and / or to the rear wall, in particular on the inside, is welded and / or glued in its first and second connection areas, directly or indirectly, to the single-layer or multi-layer, in particular multi-layer, plastic film strip of the reinforcement area, and to the at least one inner layer, in particular the inner layer, and the outer layer, wherein in these first and second connection areas at least the inside of the second hollow body of the holding loop, in particular the inwardly facing side of the second flexible plastic material strip, is connected to the outside of the first hollow body or the facing side of the single-layer or multi-layer material strip not forming a hollow body, in particular the outwardly facing side of the first flexible plastic material strip,welded and / or glued.,

[0043] If the first and second connection areas of the holding loop lie directly against the plastic film strip of the reinforcement area, the connection to the at least one inner layer, in particular the inner layer, and the outer layer usually takes place indirectly, i.e. via the respectively adjacent adjacent layer. In a corresponding way, if the first and second connection areas of the holding loop lie directly against the outer or inner layer, the connection to the at least one inner layer, in particular the inner layer, or the outer layer as well as the layer(s) of the plastic film strip of the reinforcement area can usually take place indirectly, i.e. via the respectively adjacent adjacent layer. In some embodiments, for example, the molten material of the layers involved can mix during welding, so that it is no longer possible to clearly assign the material to the layers.

[0044] In particular, to create a pleasant feel similar to that of textile holding loops, it has proven advantageous for the first flexible, in particular tubular, hollow body, in particular the first flexible plastic material strip, or the single- or multi-layer material strip not forming a hollow body and / or the second flexible, in particular tubular, hollow body, in particular the second flexible plastic material strip, of the holding loop of the front and / or rear wall to have an embossed pattern at least in sections, in particular over its entire surface. Such embossed patterns can be reliably and permanently produced, for example, when using thermoplastics, such as polyolefins, through the application of heat and pressure.

[0045] For many embodiments of the plastic carrier bags according to the invention, it has proven pragmatic to form the opening edge by a fold at the upper end of the outer layer or in the transition area from the outer layer to the continuation section.

[0046] A connection or welding of the plastic film strip or the continuation section of the front and / or rear wall to the at least one inner layer, in particular the inner layer, for example, the inner side of the inner layer, preferably involves the connection of all adjacent layers. The same generally applies to the connection of the plastic film strip or the continuation section of the front and / or rear wall to the outer layer.

[0047] In a particularly advantageous embodiment, it is provided that in addition the outer layer of the front and / or rear wall is welded and / or glued to the outer side of the at least one inner layer, in particular the inner layer, along the extension from or at a distance from the first side edge in the direction of or up to the second side edge, in particular with a continuous longitudinal weld, to form a second connecting strip, wherein this second connecting strip is preferably spaced closer to the lower edge of the reinforcement region than to its upper edge, in particular at or adjacent to the lower edge of the reinforcement region. This results in a further reinforced opening edge. It is very particularly preferred if the first and the second connecting strip are substantially overlapping at least in sections, preferably completely.

[0048] The plastic carrier bag according to the invention, in particular the single-layer plastic carrier bag according to the invention, can be designed such that the outer layer, the single-layer or multi-layer, in particular double-layer, plastic film strip of the reinforcement area, in particular the continuation section of the inner or outer layer, and / or the at least one inner layer, in particular the inner layer, of the front and / or rear wall, the first and the second side wall and the holding loops connected to the front wall and / or the rear wall, in particular their first and / or second flexible plastic material strips or the multi-layer material strip not forming a hollow body, contain or consist of recycled plastic material, in particular recycled polyolefins, for example polyethylene.

[0049] Further features and advantages of the invention will become apparent from the following description, in which preferred embodiments of the invention are explained by way of example with reference to schematic drawings. In the drawings: Figure 1 is a schematic front view of a preferred embodiment of a plastic carrier bag according to the invention; Figure 2 is a schematic side view of the blank of a side wall of the plastic carrier bag according to the invention according to Figure 1 ; Figure 3 a schematic perspective view of the plastic carrier bag according to the invention according to Figure 1 ; Figure 4 a schematic plan view of the bottom surface of the plastic carrier bag according to the invention according to Figure 1; Figure 5 is a schematic plan view of a blank for a bag body comprising the front and rear walls of the plastic carrier bag according to the invention as shown in Figure 1; Figure 6 is a schematic cross-sectional view of a section of the upper region of the plastic carrier bag according to the invention as shown in Figure 1 ; Figure 7 shows a schematic front view of a further embodiment of a plastic carrier bag according to the invention; Figure 8 shows a schematic front view of a further embodiment of a plastic carrier bag according to the invention; Figure 9 shows a schematic plan view of a blank for a bag body comprising the front and rear walls of the plastic carrier bag according to the invention according to Figure 7; and Figure 10 shows a schematic plan view of a blank for a bag body comprising the front and rear walls of the plastic carrier bag according to the invention according to Figure 8.

[0050] Figure 1shows a schematic front view of a plastic carrier bag (1) according to the invention. In the embodiment shown, at the bottom end (2), the double-layered front wall (6) merges integrally into the double-layered rear wall (8) by folding over, forming a bottom fold (16) in the transition. This means that the inner layers (28, 32) of the front and rear walls (6, 8) are integrally formed, and the outer layers (30, 34) of the front and rear walls (6, 8) are also integrally formed. The bottom fold (16) has a lateral extension from the first end (110) to the opposite second end (112) that is less than the lateral extension of the front and rear walls in the region of the opening end (4). In the tapered / bottom surface area (114, 114'), which is located in the lower third of the plastic carrier bag according to the invention, the first and second side edges (10, 12) of the front and rear walls (6, 8) run straight at an obtuse angle to the first and second side edges (10, 12).second end (110, 112) of the bottom fold (16). The front and rear walls (6, 8) are connected to the first and second side walls (102, 104) by means of weld seams (120, 122) running in the region of the first and second side edges (10, 12) (not shown). In the region of the opening end (4), the front and rear walls (6, 8) have a reinforcement region (44, 46) extending to the opening end, each containing a double-layer plastic film strip (106, 108) fastened to the inside of the front wall (6) or to the inside of the rear wall (8) and extending from the first side edge (10) to the second side edge (12). This double-layered plastic film strip (106, 108) may be a separate component, but preferably represents an integral, ie one-piece, component of the outer layer and is accordingly formed from a continuation section of the outer layer of the front or rear wall.This continuation section initially forms the opening edge (14) by folding over. By folding over again, in particular towards the inside of the inner wall, the resulting double layer creates a special reinforcement in the upper region of the carrier bag. In the embodiment shown, this continuation section is welded along a connecting strip (55) to the inner layer (28) and, via this, also to the outer layer (30). The same applies to the rear wall (8) (not shown). The front wall (6) and the rear wall (8) are each connected to the bag body by a holding loop (20, 22) via their first and second connection regions (24A, 24B; 26A, 26B). The first and second connection areas (24A, 24B; 26A, 26B) of the holding loops (20, 22) for the front and rear walls are located completely in the respective reinforcement areas (44, 46) and have no overlap with the connecting strip (55).

[0051] Figure 2 shows a schematic side view of the cut of a first side wall (102) of the plastic carrier bag (1) according to the invention according to Fig. 1 The first and second side edges (116, 118) run parallel to each other in the area beginning with the upper end (4) of the plastic carrier bag (1) according to the invention. Where the plastic carrier bag (1) according to the invention merges into the tapered / bottom area (114, 114') (see Fig. 1 ), the parallel course of these side edges ends, and they converge symmetrically to meet at a point (16') lying on the longitudinal center axis of the side wall. These tapered sections (124, 126) of the first and second side walls (102, 104) are triangular in preferred embodiments. If this side wall is a gusseted wall, the gusset runs regularly along the longitudinal center axis.

[0052] Out of Figure 3 a schematic perspective view of the plastic carrier bag (1) according to the invention according to Fig. 1 in the erected, filled state. In this erected state, the base surface is formed by parts of the front and rear walls (6, 8) in the tapered / base surface area (114, 114') as well as by the triangular tapered / base surface areas (124, 126) of the first and second side walls (102, 104). In the illustrated embodiment, the side walls (102, 104) are welded along their side edges (116, 118; 116', 118') to the inner sides of the front and rear walls (6, 8), likewise along their side edges (10, 12; 10', 12'), forming weld seams (120, 122; 120', 122').

[0053] Figure 4 shows a schematic plan view of the bottom surface of the plastic carrier bag (1) according to the invention in the filled state.

[0054] Figure 5shows a schematic plan view of a blank (100) for the outer layer (30, 34) of the front and rear walls (6, 8) of the plastic carrier bag (1) according to the invention. The outer layers of the front and rear walls (6, 8) are formed in one piece. They each also contain the respective extension sections (36, 38), which, when folded over, form the opening edge (14) and the double-layered plastic material strip of the reinforcement area (44, 46). In the area of ​​the transition from the front to the rear wall, there are triangular material recesses (18, 18') which, after the front and rear wall sections are folded over one another, including the one-piece inner layers of the front and rear walls (not shown), and joined together with the correspondingly shaped first or second side wall, form the tapered / bottom surface area (114, 114').

[0055] Figure 6shows the upper region of the plastic carrier bag (1) according to the invention. The extension sections (36, 38) are folded over the inner layers (28, 32) and also folded inward again, thus forming a double layer. These double-layered extension sections (36, 38) are welded to one another, to the inside of the inner layer (28, 32) to form the connecting regions (52, 52'). Furthermore, the inner layer (28, 32) is also welded to the respective outer layer (30, 34) to form the connecting regions (54, 54'). In the illustrated embodiment, the connecting regions (52, 52') and (54, 54') each overlap and form a uniform welded section (55, 55'), which can in particular also be obtained in a single welding step. Figure 6The holding loops (20, 22), also shown in detail, are welded on the inside to the folded, double-layered extension sections (36, 38) in the illustrated first connection areas (24A, 26A). Furthermore, in these connection areas (24A, 26A), the outer layer (30, 34), the inner layer (28, 30) and the folded extension section (36, 38) are each welded to one another. In this way, a very stable, mechanically strong plastic carrier bag (1) is obtained. Furthermore, the illustrated internal attachment of the holding loops ensures uncomplicated filling of the plastic carrier bags according to the invention. The carrying loops prevent the upper ends or opening edges from serving as abutting edges when filling with piece goods.

[0056] Figure 7shows a schematic front view of another embodiment of a plastic carrier bag according to the invention. This embodiment differs from the embodiment according to Figure 1 in that in the tapered / bottom surface area (114), which lies in the lower third of the plastic carrier bag according to the invention, the first and second side edges (10, 12) of the front and rear walls (6, 8) taper in a concave manner in the direction of the first and second ends (110, 112) of the bottom fold (16). Figure 9shows a schematic plan view of a blank (100) for the outer layer (30, 34) of the front and rear walls (6, 8) of this embodiment of a plastic carrier bag (1) according to the invention. The outer layers of the front and rear walls (6, 8) are also formed in one piece here. They each also contain the respective extension sections (36, 38), which, when folded over, form the opening edge (14) and the double-layer plastic material strip of the reinforcement area (44, 46). In the area of ​​the transition from the front to the rear wall, there are semicircular material recesses (18, 18') which, after the front and rear wall sections have been folded over one another, including the one-piece inner layers of the front and rear walls, and joined to the first and second side walls, form the tapered / bottom surface area (114, 114').

[0057] Figure 8shows a schematic front view of another embodiment of a plastic carrier bag according to the invention. This embodiment differs from the embodiment according to Figure 1 in that in the tapered / bottom surface area (114), which lies in the lower third of the plastic carrier bag according to the invention, the first and second side edges (10, 12) of the front and rear walls (6, 8) taper seamlessly, i.e., forming a right angle each time. The tapered / bottom surface area (114) thus obtained then has a uniform width or lateral extent up to the bottom fold (16). Figure 10shows a schematic plan view of a blank (100) for the outer layer (30, 34) of the front and rear walls (6, 8) of this embodiment of a plastic carrier bag (1) according to the invention. The outer layer of the front and rear walls (6, 8) are also formed in one piece here. They each also contain the respective extension sections (36, 38), which, by folding over, form the opening edge (14) and the double-layered plastic material strip of the reinforcement area (44, 46). In the area of ​​the transition from the front to the rear wall, as shown in Figure 10 shown, rectangular material recesses (18, 18') which, after the front and rear wall sections have been folded over one another, including the one-piece inner layers of the front and rear walls, and joined together with the first and second side walls, form the tapered / bottom surface area (114, 114').

[0058] The features of the invention disclosed in the above description, in the claims and in the drawings may be essential for the realization of the invention in its various embodiments, both individually and in any combination.

Claims

1. A plastic carrier bag (1) with a bottom end (2) and an opposite opening end (4), comprising a front wall (6) and a rear wall (8), each with a first side edge (10, 10') and an opposite second side edge (12, 12') and an opening edge (14), as well as a first (102) and an opposite second side wall (104), each with a first and an opposite second side edge (116, 118), as well as at least one holding loop (20, 22) connected to the front wall (6) and / or, in particular, at least one holding loop connected to the rear wall (8), each with a first and a second connection region (24A, 24B; 26A, 26B), wherein the front and rear walls (6, 8) are designed in multiple layers, in particular double layers, comprising at least one inner layer, in particular an inner layer, and an outer layer (28, 30;32, 34), wherein the front and rear walls (6, 8) in the region of the opening end (4) have a reinforcement region (44, 46), in particular extending to the opening end or encompassing it, containing at least one multi-layer, in particular double-layer, plastic film strip (106, 108) fastened to the front wall (6) on the inside or outside, in particular on the inside, and at least one multi-layer, in particular double-layer, plastic film strip (106, 108) fastened to the rear wall (8) on the inside or outside, in particular on the inside, and each extending from or spaced from the first side edge (10, 10') in the direction of or up to the second side edge (12, 12'); characterized in thatthe at least one inner layer (28), in particular the inner layer, of the front wall (6) and the at least one inner layer (32), in particular the inner layer, of the rear wall (8) are formed in one piece, that the outer layers (30, 34) of the front and rear walls (6, 8) are formed in one piece and that the front wall (6) and the rear wall (8) merge into one another at the bottom end (2) by means of folding over, in particular forming a bottom fold in this transition (16), wherein the transition (16), in particular the bottom fold, extends laterally from a first end (110) to an opposite second end (112), wherein when the front and rear walls are in contact with one another up to the transition (16), in particular the bottom fold (also called a "stackable storage state"), the lateral extent of the transition (16), in particular the bottom fold, between the first and second ends (110,112) is less than the extension of the front and rear walls between the respective first and second side edges (10, 12, 10', 12') at the opening end (4), wherein the extension of the front and rear walls (6, 8) between the respective first and second side edges (10, 12, 10', 12') in the region (114) of the lower third, in particular the lower quarter, relative to the extension between the opening end (4) and the bottom end (2), tapers in the direction of and in particular up to the transition (16), in particular to the bottom fold (also called "tapering / bottom area area"), wherein the lateral extension of the first and second side walls (102, 104) in the tapering / bottom area area (114) corresponds to the area in which the extension of the front and rear walls (6, 8) between the respective first and second side edges (10, 12, 10', 12') tapers, in each case, in particular in a corresponding manner,wherein the first side wall (102) is welded to the front wall (6), in particular along its first side edge (10), in the region of its first side edge (116), and to the rear wall (8), in particular along its first side edge (10'), in the region of the second side edge (118), and wherein the second side wall (104) is welded to the front wall (6), in particular along its second side edge (12), in the region of its first side edge (116), and to the rear wall (8), in particular along its second side edge (12'), in the region of the second side edge (118), in the section which is not the tapered / bottom area (114), the first side wall (102) is welded to the front wall (6) in the region of its first side edge (116). and is welded to the rear wall (8) in the region of the second side edge (118) and wherein in the section,which is not the tapered / bottom surface area (114), the second side wall (104) is welded to the front wall (6) in the area of its first side edge (116) and to the rear wall in the area of the second side edge (118).

2. Plastic carrier bag (1) according to claim 1, characterized in that the first and the second side edge of the first side wall (102) approach each other in the tapered / bottom surface area (114), in particular continuously, and converge in particular in the region of the transition (16), preferably the bottom fold, and that the first and the second side edge of the second side wall (104) approach each other in the tapered / bottom surface area (114), in particular continuously, and converge in particular in the region of the transition (16), preferably the bottom fold.

3. Plastic carrier bag (1) according to claim 1 or 2, characterized in thatin the section which is not the tapered / bottom surface area (114), the first side wall (102) is welded in the region of its first side edge (116) to the front wall (6) along its first side edge (10) and in the region of the second side edge (118) to the rear wall (8) along its first side edge (10'), and in that in the section which is not the tapered / bottom surface area (114), the second side wall (104) is welded in the region of its first side edge (116) to the front wall (6) along its second side edge (12) and in the region of the second side edge (118) to the rear wall along its second side edge (12').

4. Plastic carrier bag (1) according to one of the preceding claims, characterized in thatthe extension from the first to the second side edge of the first side wall substantially corresponds to, in particular corresponds to, the sum of the extension of the tapered / bottom surface area of the front wall, calculated from the transition (16), in particular the bottom fold, and the extension of the tapered / bottom surface area of the rear wall, calculated from the transition (16), in particular the bottom fold, and / or, in particular and, that the extension from the first to the second side edge of the second side wall substantially corresponds to, in particular corresponds to, the sum of the extension of the tapered / bottom surface area of the front wall, calculated from the transition (16), in particular the bottom fold, and the extension of the tapered / bottom surface area of the rear wall, calculated from the transition (16), in particular the bottom fold.

5. Plastic carrier bag (1) according to one of the preceding claims, characterized in thatthe first and second side walls (102, 104) in the tapered / bottom surface area (114) are triangular, semicircular, rectangular or square, in particular triangular.

6. Plastic carrier bag (1) according to one of the preceding claims, characterized in that adjacent to or in the region of the first end of the transition (16), in particular the bottom fold, the first side wall (102), the front wall and the rear wall are welded together in a first area and / or, in particular and, that adjacent to or in the region of the second end of the transition (16), in particular the bottom fold, the second side wall (104), the front wall and the rear wall are welded together in a second area.

7. Plastic carrier bag (1) according to claim 6, characterized in that in the first area and in the second area there is a five-, six-, seven- or eight-layer weld, in particular a six- or eight-layer weld.

8. Plastic carrier bag (1) according to one of the preceding claims, characterized in thatthe front wall tapers in a straight line from the beginning of the tapered / bottom surface area on the first side edge facing the opening end to the first end (110) of the transition (16), in particular the bottom fold, and / or, in particular and, that the front wall tapers in a straight line from the beginning of the tapered / bottom surface area on the second side edge facing the opening end to the second end (112) of the transition (16), in particular the bottom fold, and that the rear wall tapers in a straight line from the beginning of the tapered / bottom surface area on the first side edge facing the opening end to the first end (110) of the transition (16), in particular the bottom fold, and / or, in particular and, that the rear wall tapers in a straight line from the beginning of the tapered / bottom surface area on the second side edge facing the opening end to the second end (112) of the transition (16), in particular the bottom fold,tapered in a straight line or that the front wall (6) tapers in a concave manner from the beginning of the tapered / bottom surface area on the first side edge facing the opening end to the first end (110) of the transition (16), in particular the bottom fold, and / or, in particular and, that the front wall tapers in a concave manner from the beginning of the tapered / bottom surface area on the second side edge facing the opening end to the second end (112) of the transition (16), in particular the bottom fold, and that the rear wall (8) tapers in a concave manner from the beginning of the tapered / bottom surface area on the first side edge facing the opening end to the first end (110) of the transition (16), in particular the bottom fold, and / or, in particular and, that the rear wall tapers in a concave manner from the beginning of the tapered / bottom surface area on the second Side edge to the second end (112) of the transition (16), in particular the bottom fold,tapers in a concave manner or that the front wall (6) tapers in a convex manner from the beginning of the tapered / bottom surface area on the first side edge facing the opening end to the first end (110) of the transition (16), in particular the bottom fold, and / or, in particular and, that the front wall tapers in a convex manner from the beginning of the tapered / bottom surface area on the second side edge facing the opening end to the second end (112) of the transition (16), in particular the bottom fold, and that the rear wall (8) tapers in a convex manner from the beginning of the tapered / bottom surface area on the first side edge facing the opening end to the first end (110) of the transition (16), in particular the bottom fold, and / or, in particular and, that the rear wall tapers in a convex manner from the beginning of the tapered / bottom surface area on the second side edge facing the opening end to the second end (112) of the transition (16), in particular the bottom fold,tapered in a convex manner or that the front wall (6) tapers at the beginning of the tapered / bottom surface area on the first side edge facing the opening end in the direction of the opposite second side edge in a first section and in the section adjoining up to the first end (110) of the transition (16), in particular the bottom fold, tapers less sharply or no longer and / or, in particular and, that the front wall (6) tapers at the beginning of the tapered / bottom surface area on the second side edge facing the opening end in the direction of the opposite first side edge in a first section and in the section adjoining up to the second end (112) of the transition (16), in particular the bottom fold,adjoining section tapers less sharply or no longer, and that the rear wall (6) tapers at the beginning of the tapered / bottom surface area on the first side edge facing the opening end in the direction of the opposite second side edge in a first section and in the section adjoining up to the first end (110) of the transition (16), in particular the bottom fold, tapers less sharply or no longer, and / or, in particular, that the rear wall (8) tapers at the beginning of the tapered / bottom surface area on the second side edge facing the opening end in the direction of the opposite first side edge in a first section and in the section adjoining up to the second end (112) of the transition (16), in particular the bottom fold.

9. Plastic carrier bag (1) according to one of the preceding claims, characterized in thatthe holding loop (20, 22) connected to the front wall (6) and to the rear wall (8) is welded in its first and second connection areas (24A, 24B; 26A, 26B) to the multi-layer plastic film strip (106, 108) of the reinforcement area (44, 46) and also to the at least one inner layer (28, 32), in particular the inner layer, and the outer layer (30, 34), and wherein the multi-layer plastic film strip (106) of the reinforcement area (44) of the front wall (6) is fastened to the inner or outer layer of or spaced from the first side edge (10) in the direction of or up to the second side edge (12) by means of welding, and wherein the multi-layer plastic film strip (108) of the reinforcement area (46) of the rear wall (8) is fastened to the inner or outer layer of or spaced from the first Side edge (10') is fastened in the direction of or up to the second side edge (12') by welding, wherein the first and second connection areas (24A,24B) of the retaining loop (20) connected to the front wall (6) and the first and second connection areas (26A, 26B) of the retaining loop (22) connected to the rear wall (8) are present on the inside of the front and rear walls (6, 8) in the area of the multi-layer plastic film strip (106, 108) of the reinforcement area (44, 46), wherein a continuation section (36, 38) adjoins the outer layer (30, 34), wherein the continuation section forms the plastic film strip (106, 108) of the reinforcement area (44, 46), wherein the continuation section (36, 38) extends at least in sections along the inside of the at least one inner layer (28, 32), in particular the inner layer, and bears against it, wherein said continuation section is connected to the inside of the at least one inner layer (28, 32), in particular the inner layer, the present continuation section (36, 38) is designed at least partially as a double layer by means of folding,wherein this continuation section (36, 38) is welded along an extension from or at a distance from the first side edge (10, 10') in the direction of or up to the second side edge (12, 12') to the inside of the at least one inner layer (28, 32), in particular the inner layer, in particular with a continuous longitudinal weld, and wherein the outer layer (30, 34) of the front and rear walls (6, 8), in particular in the transition to the continuation section (36, 38), comprises or forms the opening edge (14), and wherein the at least one inner layer (28, 32), in particular the inner layer, extends with its upper edge (40, 42) up to the opening edge (14) or at a distance therefrom, wherein the outer layer and the continuation section (36) of the front wall (6) and the outer layer and the continuation section (38) of the rear wall (8) are each formed in one piece, and wherein the multi-layer, in particular double-layer, plastic film strips (106,108) of the reinforcement region (44, 46) of the front and rear walls (6, 8) is welded over all of its layers to the inside of the at least one inner layer (28, 32), in particular the inner layer, along the extension from or at a distance from the first side edge (10, 10') in the direction of or up to the second side edge (12, 12'), in particular with a continuous longitudinal weld, to form a first connecting region (52, 52'), in particular a connecting strip, wherein this first connecting region (52, 52'), in particular first connecting strips, is spaced closer to the lower edge of the reinforcement region (44, 46) than to its upper edge, in particular at or adjacent to the lower edge of the reinforcement region (44, 46), wherein the outer layer (30, 34) of the front and rear walls (6, 8) is welded to the outside of the at least one inner layer (28, 32), in particular the inner layer,along the extension from or at a distance from the first side edge (10, 10') in the direction of or up to the second side edge (12, 12'), in particular with a continuous longitudinal weld, to form a second connecting region (54, 54'), in particular a second connecting strip, wherein this second connecting region (54, 54'), in particular second connecting strips, is each spaced closer to the lower edge of the reinforcement region (44, 46) than to its upper edge, in particular at or adjacent to the lower edge of the reinforcement region (44, 46), wherein the first and second connection regions (24A, 24B, 26A, 26B) of the holding loops (20, 22) connected to the front wall (6) and / or, in particular, to the rear wall (8), obtained by welding, are spaced from the first and second connecting regions (52, 52', 54, 54'), in particular the first and second connecting strips,in particular have no overlap with the first and second connecting regions (52, 52', 54, 54'), wherein the retaining loop connected to the front wall (6) and / or the rear wall (8) on the inside is welded in its first and second connection regions 24A, 24B, 26A, 26B, directly or indirectly, to the multi-layer plastic film strip (106, 108) of the reinforcement region (44, 46) and to the at least one inner layer 28, 32), in particular the inner layer, and the outer layer (30, 34).

10. Plastic carrier bag (1) according to one of the preceding claims, characterized in that the first and second side walls (102, 104) are single-layered.

11. Plastic carrier bag (1) according to one of the preceding claims, characterized in that the first and second side walls (102, 104) have a side fold which preferably extends to the transition (16), particularly preferably to the bottom fold.

12. Plastic carrier bag (1) according to one of the preceding claims, characterized in that the first and second side walls (102, 104) have a seam at the opening end (4).

13. Plastic carrier bag (1) according to one of the preceding claims, characterized in that the first and second side walls (102, 104) are based on separate material cuts.

14. Plastic carrier bag (1) according to one of the preceding claims, characterized in that the bottom fold (16) represents an outward-facing bottom fold when the plastic carrier bag (1) is in the upright, filled state.

15. Plastic carrier bag (1) according to one of the preceding claims, characterized in thatthe outer layer is based on or consists of a plastic material, in particular polyethylene, which is at least partially transparent and which is printable or printed on the inside, in particular by means of a counter-printing process, at least in sections, and / or that the at least one inner layer, in particular the inner layer, is at least partially printable or printed on the outside and that the outer layer is based on or consists of a plastic material, in particular polyethylene, which is at least partially transparent.

16. Plastic carrier bag (1) according to one of the preceding claims, characterized in thatthe outer layer, the multi-layer, in particular double-layer, plastic film strip (106, 108) of the reinforcement region, in particular the continuation section of the inner and / or outer layer, in particular the outer layer, and the at least one inner layer (28, 32), in particular the inner layer, of the front and / or rear wall (6, 8), in particular of the front and rear wall (6, 8), as well as the holding loops connected to the front wall (6) and / or to the rear wall (8), as well as the first and the second side wall (102, 104) are formed or consist of polyolefins, preferably polyethylene, particularly preferably HD or LD polyethylene, in particular LD polyethylene.

17. Plastic carrier bag (1) according to one of the preceding claims, characterized in thatthe at least one inner layer, in particular the inner layer, of the front and rear walls (6, 8) comprises or represents a foamed plastic film, preferably a foamed polyolefin film, particularly preferably a foamed polyethylene film and in particular a foamed LD polyethylene film, and / or, in particular and, that the outer layer of the front and rear walls (6, 8) comprises or represents a non-foamed plastic film, preferably a non-foamed polyolefin film, particularly preferably a non-foamed polyethylene film and in particular a non-foamed LD polyethylene film.

18. Plastic carrier bag (1) according to one of the preceding claims, characterized in thatthe outer layer, the multi-layer, in particular double-layer, plastic film strip (106, 108) of the reinforcement region, in particular the continuation section of the outer layer, and the at least one inner layer (28, 32), in particular the inner layer, of the front and rear walls (8), as well as the holding loops connected to the front wall (6) and the rear wall (8), and the first and second side walls (102, 104) are formed or consist of polyethylene, in particular LD polyethylene, wherein the at least one inner layer (28, 32), in particular the inner layer, of the front and rear walls (8) represents a foamed polyethylene film, in particular a foamed LD polyethylene film, and wherein the outer layer of the front and / or rear walls (6, 8), and optionally the multi-layer plastic film strip (106, 108) of the reinforcement region, a non-foamed polyethylene film, in particular a non-foamed LD polyethylene film, represents.

19. Plastic carrier bag (1) according to one of the preceding claims, characterized in that the first connecting regions (52, 52') each overlap with the second connecting regions (54, 54'), in particular to form a uniform connecting region (55, 55').

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